Submission #642425

#	Time	Username	Problem	Language	Result	Execution time	Memory
642425		burak_ozzkan	Knapsack (NOI18_knapsack)	C++14	17 / 100	4 ms	1876 KiB

knapsack

#include <bits/stdc++.h>
#define nl '\n'
#define int long long
using namespace std;

struct item{
    int value;
    int weight;
    int piece;
};

void solve(){
    int s, n;
    cin >> s >> n;

    vector<item> v(n);
    for(int i = 0; i < n; i++){
        item tmp;
        cin >> tmp.value >> tmp.weight >> tmp.piece;
        v[i] = tmp;
    }

    vector< vector<int> > dp(n+1, vector<int>(s+1, -1));
    function<int(int, int)> f = [&](int i, int j){
        if(i < 0 || j <= 0) return 0LL;
        if(dp[i][j] != -1) return dp[i][j];

        int t1 = 0;
        if(j-v[i].weight >= 0) t1 = v[i].value + f(i-1, j-v[i].weight);

        int t2 = 0;
        if(i-1 >= 0) t2 = f(i-1, j);

        return dp[i][j] = max(t1, t2);
    };

    cout << f(n-1, s) << nl;;
}

int32_t main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    int t = 1; /*cin >> t;*/ while(t--) solve();
}

• Subtask 1: 0 / 12
• Subtask 2: 17 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27